Paper-bag machine.



' PATBNTED JULY 12 1904. No. 765,149 Jl PETRIG.

PAPER BAG MACHINE.

APPLICATION FILED 00T.1B. 1902.

2 SHEETS-SHEET 1.

No Homin Il', f

PATENTED JULY 12 1904.

No '765,149 J. PETRIG.

PAPER BAG MACHINE.

APPLIOATIoN HLBD ocmw. 1902. l, No MODEL. 2 sums-snm a.

UNITED STAT-Es Patented July 12, 1904.

PATENT OFFICE.

JOSEF PEIRIC, OF LAIBACH, AUSTRIA-HUNGARY, ASSIGNOR ,.IO EMERIOH C.MAYER, OF GRATZ, AUSTRIA-HUNGARY.

PAPER-:BAG MACHINE.

SPECIFICATION forming partr of .Letters Patent No.765,149,dated July 12,1904.

Application filed October 18, 1902. Serial No. 127,852. '(No model.)

gary, have invented certain` new andusefulk Improvements in Paper-BagMachines; and I do hereby declare the following to be afull, clear, andexact description of .the invention,

such as will enable others skilled in ythezart to which it appertains tomakeand use .the same.

My invention relates to paperfbagmachines of the kind in which thedoubled paper blanks, having a projecting folding lap, are by twoendless carrier'- belts moving in thev same direction and carriedconsecutively over apasting device, through a folding device for turn-ling downA the lap, and, finally, between two presser-rolls, which pressthe folded lap upon the pasted side of the body of the bag. y'

The object of my invention isanimproved device for applying the paste.

In the annexed drawings a paper-bag machine fitted with my improvedpastingdevice is shown, of which.-

Figure 1 is a front elevation, partly in section, on line C D of Fig. 2.Fig. 2 is a plan view of the machine. Fig. 3 .is a sectional view of themachine on lines A B and F G of Fig. l. Fig. 4 is a section, onanenlarged scale, on line P Q of Fig. 2. Fig. 5` shows the foldingdevice in plan view; and Figs. 6, 7 and 8 are sections thereof on linesH J K L, and M N, respectively, of Fig. 5.

In all the figures corresponding letters of reference indicate likeparts.

The doubled paper blanks m, which are placed upon the table I), arefolded. in such manner that their upper part projects beyond,

the lower part by the width of the lap n, which is to'be folded back andpasted upon the lower part of the blank. These doubled blanks are byhand fed between the two endless carrier belts or bands a c, so that thelap n and that portion ofthe other part of the blank to 'which said lapis to be pasted stand clear of or remain .uncovered by thecarrier-belts. The 'doubled blanks are carried over a pasting devicewhich applies paste to that portion of 'a .and .folds it vagainst the,pasted ..portion,

and, finally, they pass A.between two presserrolls cl c, by which thelapn is pressed tightly againstthe. pasted Jparttof the blank. The tubesthus formedaredeliveredon a table ci, to be .after-ward closed onone endin the same ror any; other s uitablemanner.

; The machine isfbypreference constructed symmetrically, so .thatithas acarrier, paster, folder, and presserat eithery Side.'

. The device ,for applying paste to that portionof thelovver surfaceofthe narrower part off the blank to which thelap n is ,to `be pasted andwhich forms the object of my present invention essentially. consists` ofay cylinder f for containing thepaste.. Iin which a piston g may bemovedwith uniform velocity.

' Motion .is imparted to the piston g by a screw-.threaded rod L,rotatably connected to the .piston g', which rod works in acorrespondingly-.threadednut composed vof the two halves ,1c c. lEach ofthese two halves is attached to a lswinging arm Z, and the free ends of.these arms ,Z l carry a grip c', having a nut j, by `meansof which. thetwo halves of the nut may be held in .working contact with the thread ofthe rod L. The rod {L receives its rectilinear motion from a worin-wheelp, movably connected `therewith and j'ournaled in the casingy. Into thisworm-wheelv p gears an endless screw c', keyed fast Ato the shaft q,which. is rotated fromthe driver-shaft s of the carrier-belts c @bymeans of two conical pulleys and a belt, as shown. f

. The paste, is appliedto the under side of the bag-blank by a disk w,overt the upper part of the periphery of which the paper blanks arecarried. The disk w is inclosed by acasing c, which forms a knee withthe cylinder f and in which the shaft c of the disk fw is journaled. Oneend of the casing o is closed by a cover c, through which passes theshaft a, and the aperture is closed by a stuffing-box, as shown in Fig.4 of the drawings. The shaft c receives its movement by a belt from theY drawn back by hand.

driving-shaft of the carriers t a, as shown in Fig. 2. casing c that 1tbears with one surface against the inner side of the cover e, with theother surface against a web u in the casing fu, which covers about halfof this surface of the disk, and with its periphery against the innerperiphery of the casing, so that when rotated it will be in frictionalcontact with these parts. The disk w is provided with a number ofperforations m for taking up and carrying along the paste contained inthe casing o. In the top part of the casing U there is an open spacebetween the cover e and the flange or web u of the casing/U, throughwhich protrudes a small part of the periphery of the disk w. Owing tothe circumstance that the greater part of the sides and the peripherjTof the disk w is inclosed by and in frictional contact with the rigidsurfaces of the casing e, only a small part of the disk projectingtherefrom, the paste taken upon by the disk is not only ground up veryfinely, but is also heated, and is by the projecting part of the diskapplied to the paper in a finely-distributed and heated state as theblanks are passed over the disk. The casing c is attached to th'ecylinder f by a bayonet-joint, so that the two parts can easily beseparated from each other when the cylinder is to be filled with paste.

For refilling the cylinder the nut vi is loosened and the swinging' armsl with the nuthalves are opened, whereupon the piston is Thebayonet-joint connecting the cylinder with the casing o being openedtheformer may be turned to the right and fresh paste be introduced behindthe piston. To avoid this manipulation, the casing o may be providedwith an aperture z5, which when the. cylinder is empty may be connectedwith a paste-reservoir, from which the paste will enter the cylinder bysuction as the piston'isdrawn back, whereupon the aperture t may beclosed again by a suitable plug' or cap. Havingnow described myinvention, what I claim, and wish to protect by Letters Patent, isi f jl. In paper-bag machines the combination with a carrier and a folder, ofa receptacle in which the paste`; is under pressure, having a webtherein, a cover to said receptacle, a reciprocating piston, a diskrotating in said receptacle at right angles to the piston betweenfrictionsurfaces formed by said web and cover and having a portion ofits periphery rIhe paste-disk w is so placed in thel projecting fromsaid receptacle, and of means for rotating the disk.

2. In paper-bag machines the combination with a carrier and a folder ofa paste-receptacle, having a web therein, a cover for said receptacle,of a perforated disk rotating in this receptacle betweenfriction-surfaces formed by said web and cover and having a portion ofits periphery projecting from said receptacle, of means for rotating thedisk, of a cylinder connected with said receptacle, and eX- tending atright angles thereto, a piston working in said cylinder, and means forimparting rectilinear motion to said piston.

3. In paper-bag machines the combination with carrier and a folder of apaste-receptacle, having a web therein, a cover for said receptacle, aperforated disk rotating in this receptacle between friction-surfacesformed by said web and cover, and having a portion of its peripheryprojecting from said receptacle means for rotating the disk, a cylinderconnected with said receptacle, and extending at right angles thereto, apiston working in said cylinder having a screw-threaded rotatable rodattached thereto, of a stationary adjustable nut adapted to be broughtinto and out of engagement with the threads of said rod, and of meansfor rotating this rod, all substantially as and for the purpose setforth.

,4. In a paper-bag machine, the combination with a carrier and a folder,of a paste-receptacle, a cylinder at right angles thereto, a piston inthe cylinder, a screw-threaded rod pivotally connected with the piston,a two-part threaded nut in which said rod works, swinging arms carryingsaid two. parts of the nut, and means carried by the said arms forholding the two parts of the nut in working contact with said rod.

5. In a paper-bag machine, the combination with a carrier and a folder,of a paste-receptacle, a cylinder at right angles thereto, a piston inthe cylinder, a screw-threaded rod pivotally connected with thev piston,a two-part threaded nut in which said rod works, swinging arms carryingsaid two parts of the nut,

'a gripcarried by the free ends of said arms,

and a nut carried by said grip, and means for actuating said threadedrod.

In testimony whereof I afHX my signature. y JOSEF PETRIC.

In presence of- FRIEDRICH BINDER, ALvEsTo S. HoeUE.

IOC

